Astronomy Unit 1 Vocab Review

Front

What is the universe?

Back

The universe is the totality of all space, time, matter, and energy.

Front

What is astronomy?

Back

Astronomy is the study of the universe.

Front

What is the Milky Way galaxy?

Back

The Milky Way galaxy is one galaxy among billions of others, spread throughout the observable universe.

Front

What is a light year?

Back

The distance that light travels in one year.

Front

What is the sun?

Back

The sun is a star, a very hot ball of gas.

Front

What is a constellation?

Back

A group of stars that appear to form a pattern in the sky.

Front

What are stars?

Back

A glowing sphere of gases that produces light through nuclear processes.

Front

What is energy?

Back

The ability to do work.

Front

What is nuclear fusion?

Back

A process in which low-mass nuclei (e.g., H or He) combine to form a heavier and more stable nucleus, releasing an enormous amount of energy.

Front

What is a supergiant?

Back

An enormous star that is near the end of its life.